kbhit in C language

kbhit() is present in conio.h and used to determine if a key has been pressed or not. To use kbhit function in your program you should include the header file “conio.h”. If a key has been pressed then it returns a non zero value otherwise returns zero.

// C++ program to demonstrate use of kbhit()

#include <iostream.h>

#include <conio.h>

intmain()

{

while(!kbhit())

printf("Press a key\n");

return0;

}

Output:

"Press a key" will keep printing on the
console until the user presses a key on the keyboard.

Note : kbhit() is not a standard library function and should be avoided.

Program to fetch the pressed key using kbhit

// C++ program to fetch key pressed using

// kbhit()

#include <iostream>

#include <conio.h>

usingnamespacestd;

intmain()

{

charch;

while(1) {

if(kbhit) {

// Stores the pressed key in ch

ch = getch();

// Terminates the loop

// when escape is pressed

if(int(ch) == 27)

break;

cout << "\nKey pressed= "<< ch;

}

}

return0;

}

Output:

Prints all the keys that will be pressed on
the keyboard until the user presses Escape key

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